Browsing by Keyword "Noise"
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Item Acoustic design through predictive methods in Cross Laminated Timber (CLT) panel structures for buildings(OAL-Osterreichischer Arbeitsring fur Larmbekampfung, 2013) Pérez, Mariana; Fuente, Marta; Tecnalia Research & Innovation; ECOEFICIENCIA DE PRODUCTOS DE CONSTRUCCIÓNIndustrialization is a strategic trend in the construction sector that offers several distinct advantages over traditional construction: Tight costs, minimization of work-related accidents, on-site construction time reduction, etc. However, when prefabricated or lightweight construction solutions are used in buildings, standardized methods to design and predict the acoustic performance of buildings from the performances of elements EN 12354-1 and -2, are no longer valid. As consequence, further work is needed related to the laboratory characterization of building systems, the behavior of junctions between prefabricated and/or lightweight components, the use of resilient materials, etc. This paper shows the results of R&D activities carried out to predict the acoustic behavior of cross laminated timber buildings. A two storey experimental facility has been built for the characterization of vibration attenuation in junctions. An approach of flanking transmission characterization method based on EN 10848 series has been used.Item Action plan for a responsible nightlife in the medieval town of Vitoria-Gasteiz(SOCIEDAD ESPANOLA DE ACUSTICA - Spanish Acoustical Society, SEA, 2019) García-Perez, Igone; Aspuru Soloaga, Itziar; Pilar, Fernandez Alcala; Alvaro, Santander; Jone, Belausteguigoitia; Irati, Alonso; Andres, Alonso; Calvo-Manzano, Antonio; Delgado, Ana; Perez-Lopez, Antonio; Santiago, Jose Salvador; ADAPTACIÓN AL CAMBIO CLIMÁTICO; CALIDAD Y CONFORT AMBIENTALBecause of an increase of the leisure activities in the public areas of cities and due to a greater requirement of the citizens' quality life, the noise caused by concurrence of people is one of the issues to be addressed by the City Councils in Spain. Vitoria-Gasteiz has begun addressing this problem from a participatory approach involving all the stakeholders to build a common diagnosis and a shared road map. The identified actions highlight the need fora holistic approach (not only from the spatial point of view but also from the need to consider, apart from the noise, other issues such as safety and cleanliness). These actions also show the need to raise awareness and involve all stakeholders, the key ones being: the leisure users and their own leisure facilities. The technical-participatory execution of the Plan is accompanied by communication actions and performances in public areas to generate enough social impact and also to create awareness of the problem. The focus of the Plan is on the integration of all the stakeholders and on the adaptation of the measures to the reality of Vitoria-Gasteiz.Item Application of the methodology to assess quiet urban areas in Bilbao: Case pilot of QUADMAP(OAL-Osterreichischer Arbeitsring fur Larmbekampfung, 2013) García, Igone; Aspuru, Itziar; Herranz, Karmele; Bustamante, María Teresa; ADAPTACIÓN AL CAMBIO CLIMÁTICO; CALIDAD Y CONFORT AMBIENTALThe aim of LIFE + project QUADMAP is to propose a methodology for the selection, analysis and management of Urban Quiet Areas. Considering the study of the European state of art, a preliminary draft of instructions is done. The application of this guide in the pilot cases of the project will provide information to test and improve this methodology, which is the final result of the project. This communication presents the experience of the use of these instructions in one of the selected pilot cases in Bilbao: General Latorre square. The guide for the analysis of quiet urban areas is based in considering three complementary tools: expert analysis, sound measurements, and evaluation of perception through the application of questionnaires. The proposed methodology is devoted to provide useful information for the management of the area and its quietness. This objective implies more than reducing noise pollution and the exclusively consideration of the acoustic context of the place.Item European round robin test for sound insulation measurements of lightweight partition(2011) Demanet, Cyrille; De Rozas, Maria Jose; Chene, Jean Baptiste; Foret, Remy; Seguridad Producto GasteizThis paper presented a part of the work initiated to conduct a Round Robin in 19 European Laboratories. This objective is to prepare a test code for drywall system of plasterboard with steel studs.CENTC126 decided to set up a working group to first realize a new Round Robin test that has been performed during winter 2010-2011. The Working Group, WG9, is now in phase to analyze data collected : measurement on element, product characterization and laboratory detailed information. Two partitions have been selected and more than 120 data have been asked to the laboratory. Repeatability and reproducibility are presented and compared to the tentative value indicated in annex A of ISO140-2. Afterwards the working group will prepare a test code that will give the uncertainty level of the acoustic measurement on laboratory of a plasterboard drywall system with steel stud.Item Maite II: 3D Numerical Simulation for sound diffraction of added device(2010) Itxasne, Diez Gaspón; Antonio, Galván José; Manuel, Vazquez; Pilar, Fernández; Tecnalia Research & Innovation; CALIDAD Y CONFORT AMBIENTALThis paper presents the results obtained during the MAITE II project "Transport infrastructure noise attenuation: design and system modeling of additional devices to optimize the effectiveness on diffraction edges", based on calculations to evaluate the effect of top edge of the barrier. The intrinsic characteristics of the top edge have been assessed according to the European technical specifications CEN/TS 1793-4. The attenuation due to the top device has been evaluated at several distances. Finally, it is also presented the results obtained by 2D and 3D numerical simulations using a Boundary Element Method, in order to verify the results achieved in the measurement campaign.Item Noise Sources, Effects and Countermeasures in Narrowband Power-Line Communications Networks: A Practical Approach: A practical approach(2017-08) López, Gregorio; Moreno, José Ignacio; Sánchez, Eutimio; Martínez, Cristina; Martín, Fernando; POWER ELECTRONICS AND SYSTEM EQUIPMENTThe integration of Distributed Generation, Electric Vehicles, and storage without compromising the quality of the power delivery requires the deployment of a communications overlay that allows monitoring and controlling low voltage networks in almost real time. Power Line Communications are gaining momentum for this purpose since they present a great trade-off between economic and technical features. However, the power lines also represent a harsh communications medium which presents different problems such as noise, which is indeed affected by Distributed Generation, Electric Vehicles, and storage. This paper provides a comprehensive overview of the types of noise that affects Narrowband Power Line Communications, including normative noises, noises coming from common electronic devices measured in actual operational power distribution networks, and noises coming from photovoltaic inverters and electric vehicle charging spots measured in a controlled environment. The paper also reviews several techniques to mitigate the effects of noise, paying special attention to passive filtering, as for being one of the most widely used solution to avoid this kind of problems in the field. In addition, the paper presents a set of tests carried out to evaluate the impact of some representative noises on Narrowband Power Line Communications network performance, as well as the effectiveness of different passive filter configurations to mitigate such an impact. In addition, the considered sources of noise can also bring value to further improve PLC communications in the new scenarios of the Smart Grid as an input to theoretical models or simulations.